Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Com quem ela jogou no saibro?
 ###Tabelas: CREATE TABLE new_york_yankees_vs._boston_red_sox (new_york_yankees_vs._boston_red_sox_id AUTO_INCREMENT PRIMARY KEY, Game INT, Date VARCHAR, Location VARCHAR, Time VARCHAR, Attendance INT) CREATE TABLE 2004_ladder (2004_ladder_id AUTO_INCREMENT PRIMARY KEY, Ballarat FL VARCHAR, Wins INT, Byes INT, Losses INT, Draws INT, Against INT) CREATE TABLE week_8_july_30_2008 (week_8_july_30_2008_id AUTO_INCREMENT PRIMARY KEY, Couple VARCHAR, Style VARCHAR, Music VARCHAR, Choreographer(s) VARCHAR, Results VARCHAR) CREATE TABLE cantonal_school_systems (cantonal_school_systems_id AUTO_INCREMENT PRIMARY KEY, Canton VARCHAR, Years of Kindergarten INT, Years of Kindergarten provided VARCHAR, Years of Kindergarten legally required VARCHAR, Length of Primary School INT, Length of mandatory Secondary School INT, Separate Secondary Schools? VARCHAR, Cooperative Secondary Schools? VARCHAR, Integrated Secondary Schools? VARCHAR) CREATE TABLE mixed_doubles:_8_5_titles_3_runner–ups (mixed_doubles:_8_5_titles_3_runner–ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents VARCHAR, Score VARCHAR)  
SELECT Partner FROM mixed_doubles:_8_5_titles_3_runner–ups WHERE Surface = Clay